About this Add-on

Zoom Button allows you to control all three of the zoom functions in Thunderbird with a single button. Works for both text only zoom and full page zoom.A status bar button is added by default to the main window, but you can also add a (larger) toolbar button to the main toolbars, and one to a toolbar in the compose window.

Add the toolbar button to the main window and/or the compose window:View > Toolbars > Customize > drag the Zoom button to a toolbar or,Right click on the Menu Bar > Customize > drag the Zoom button to a toolbar.Status bar button is added by default.Note:If you view messages in a separate window (as opposed to a tab) add the zoom button as directed above.